R49 High Density Batt Insulation

They have r values of either 30 or 38. On center 2 in. Item 305816 model rxss31525.

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Fiberglass Insulation R Value And Thickness Comparisons Insulation R Value R Value Fiberglass Insulation

Fiberglass Insulation R Value And Thickness Comparisons Insulation R Value R Value Fiberglass Insulation

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